Sectional oven



A. MAEHLER.

.sEcTloNALovENI APPLICATION FILED DEC. I3, 1919.

Patented May 11,1920.

NTTED STATES PATENT OFFICE.

viiIvrIIUn MAEHLER, or CHICAGO, ILLINOIS.

. siic'inoiminl oVEN.

To all whom t may concern Be it known that I, An'rrrU-R MAEHLER, a

. Acitizen of the United States of America, and y .aresidentof Chicagdin the county'oiiGook,j Stateof` illinois, have invented certain new and useful Improvements in v Sectional Oi/enacty which the following is a speciiication.

. jacent .wall

wThis inventionrelates to thatftype of sec :tional insulated oven and like walls which constitutes the subject matter of my ,prior Letters Patent N o. 1,320,882, dated Nov. 14,

1919, and has for yits variousobjects To .provide asllplegand substantial formation of the` corner Iforming sections of the y oven, adapted for ready connection with adand roof sections of theoven. To providemeans foreii'ecting additional f closure of the seamsbetween the oven sections in aready and effective manner, and

To provide a structuralformation and association of parts whereby the oven sections are drawn together and substantially held in proper .assembled relation.

To provide a structural formation and asfl sociation ofparts in the oven. door, whereby an 'effective .heat insulation is imparted 1 thereto, all as will ,hereinafter more fully"V I j struction shown in said Fig.v 3, the said outer ap ear.

n the .accompanying drawing Figurehis perspect'veviewofthe upper portion. of a sectionahoven embodying the .present invention.

Fig.12, isa detail vertical section on line a-a. Fig. i.

Fig. 3, is. a similar view on line 8 3. Fig. 1.

Fig.` 4;, isay detailhorizontal section on line afval Fig. 1. v

Fig. 5, is asimilar view on line 5-5. Fig. 1.

Like referencenumerals indicate like parts in the4 several views. As represented inthe drawing the oven is composed of a. series, of cornersections 1, a

yseries of intermediate wall sections2, and a seriesof horizontalupper or roof sections 3,

, with allot the sections preferably of the del. tail construction set .forth in my prior Patent No. 1,820,882, and each section compris- `ing an inner slablor filler 4; of heat insulatingmaterial, and. outer and inner inclosing plates 5 and 6 of metal secured to the slab Patented May 1 1., 1920.

Application filed December 13,1919, Serial No.y 344,743.

' or iiller l by end folds 5 and 6 of said platesengaging in grooves in theendsof the slab orfiller 4 in a manner to avo'iddirect heat conducting contact between' said plates 60 as shown more particularly in Fig. 2.`

if designates a joining tongue or strip of insulating material,"whichas in myformer patented construction, fits the end grooves of adjoining oven sections to'form a-` tight 65 and substantial ljoint between' said sections and'maintain the same in proper alin'ement.

One portion of the present invention'consists in forming the corner sections A1"'of the ,oven with vertical members" in angular re- 70 .provided with the above described kjoining groove in the end which adj oins an adjacent section of the oven'structure, as shownmore particularly in Fig. 2.

`.' .Anotlier portion of thepresent invention involves a door or closure member 8 for the 80 oven, ci? substantially the same detail construction as thewall and roof sections above described with the addition thereto of marginal extensions 9 Von the outer plate 8 of the door member adapted to lap over the margins ofthe oven doorway or opening as illustrated in Fig. 3. In the preferred conplate 8 will carry anangle bar or frame `10, which inconnection with the infold 11 90 vof the inner door plate 8".v will constitute the engaging means for said plates with the end grooves in the inner insulating slanci iiller 12 of the door, as wellas provide bear- .ingsuriaces for a filling strip 13`of.insulat 95 ing material.

Another part of the present invention comprises an angle bar 14: secured adjacent to a meeting end of an oven section, and

adapted to overlap the like end of an adj oining oven section and afford a more complete closuie of the joint'between said sections,

and maintain the same in properassembled relation. In the preferred construction of and horizontal portions are formed by slitting the outstanding web of the angle bar `the above described parts' opposed pairs of 105 'bends at the meeting point of the vertical 11o and then bending the base Web to the required angular relation, as shovvn more especially in Fig. 2. In addition to economy in manufacture such formation of parts provides a rectangular corner pocket adapted to receive top bracing angle bars new to be described.

15 designates bracing angle bars arranged at opposite top corners of the oven structure, and resting in the above described rectangular pockets of the angle bars 2li. The bracing angle bars 15 are secured in place by attachment to the corner bracing bars 16 of the oven and by anchor bolts 17 connecting said bars 15 to the angle bars 14 aforesaid.

18 designates tie bolts extending across the top of the oven and passing through the bracing angle bars 15 and through roof angle bars 11i to tie and hold together the roof sections in proper assembled relation.

19 designates horizontal tie bolts passing through brackets 20 and 21 secured to the aforesaid corner bracing bars 16 of the oven to secure the vertical side sections of the oven together in manner substantially as set forth in my prior patent aforesaid.

Having thus fully described my said invention, What I claim as new and desire to secure by Letters Patent is 1. A `corner member for sectional ovens of the type described, comprising vertical portions in angular relation, and a rectangular top portion in angular relation to said vertical portions, said portions being integrally formed and provided With grooves in their joining ends for the reception of a joining strip, substantially as set forth.

2. A sectional oven of the type described, comprising a plurality of Wall sections, a plurality of roof sections, and a plurality of corner sections, each corner section comprising vertical portions in angular relation and a rectangular top portion, said portions being integrally formed and provided With grooves in their joining ends for the reception of a joining strip, substantially as set forth.

3. A door for sectional ovens of the type described, comprising a filler slab of insulating material vformed with grooves in its end faces, outer and inner plates having portions engaging in said grooves, and filler strips arranged in said grooves, the outer plate having marginal extensions beyond the filler slab, substantially as set forth.

4c. A door for sectional ovens of the type described, comprising a filler slab of insulating material formed with grooves in its end faces, outer and inner plates associated 'N'With said slab, the inner plate having rebent portions engaging in the grooves of the slab and marginal extensions beyond the slab, and filler strips arranged in said grooves, substantially as set forth.

5. In a sectional oven of the type described, a section comprising a slab of insulating material formed With grooves in its end faces, inner and outer casing plates having engagement With said grooves, joining strips fitting said grooves, and an angle bar secured to a margin of said outer plate and overhanging the end of the slab in Which a groove aforesaid is formed, substantially as set forth.

6. A sectional oven of the type described, comprising a series of Wall and roof sections formed With grooves in their meeting edges, each Wall section comprising a vertical portion and a horizontal portion integrally connected together, joining strips fitting the grooves aforesaid, and angle bars secured to said sections and overlapping the meeting edges of the sections, substantially as setforth.

" 7 A sectional oven of the type described, comprising a series 'of Wall and roof sections formed With grooves in their meetmg edges,

each Wall section comprising a vertical portion and a horizontal portion integrally connected together, joining strips iitting the grooves aforesaid, angle bars secured to said sections and overlapping the meeting edges of the sections, bracing angle bars arranged at the upper corners of the oven and attached to the angle bars aforesaid, and tie rods extending through said bracing angle bars substantially as set forth.

8. A sectional oven of the type described, comprising a series of Wall and roof sections formed With grooves in their meeting edges, each Wall section comprising a vertical portion and a horizontal portion integrally connected together, joining strips fitting the grooves aforesaid, angle bars secured to said sections and overlapping the meeting edges of the sections, bracing angle bars arranged at the upper corners of the oven and attached to the aforesaid angle bars by anchor bolts, and tie-rods extending through said bracing angle bars, substantially as set forth. v

9. A sectional oven of the type described, comprising a series of Wall and roof sections formed With grooves in their meeting edges, eachWall section comprising a vertical portion anda horizontal portion integrally connected together, joining strips fitting the grooves aforesaid, angle bars secured to said sections and overlapping the meeting edges I of the sections, vertical bracing bars attached to the-corners of the oven, .bracing angle bars arranged at the upper corners of the oven and attached to the marginal angle bars and vertical bracing bars aforesaid, and tie rods extending through said bracing angle bars substantially as set forth.

10. A sectional oven of the type described, comprising a series of Wall and roof sections formed With grooves in their meeting edges,

each Wall section comprising a vertical portion and a horizontal portion integrally connected together, joining strips fitting the grooves aforesaid, angle bars secured to said section and overlapping the meeting edges of the section, vertical bracing bars attached to the corners of the oven, and horizontal tie rods connecting said bracing bars together, substantially as set forth.

11. A sectional oven of the type described, comprising a series of Wall and roof sections formed with grooves in their meeting edges, each Wall section comprising a vertical portion and a horizontal portion integrally connected together, joining strips fitting the grooves aforesaid, angle bars, secured to said sections and overlapping the meeting edges of the sections, vertical bracing bars attached to the corners of the oven, horizontal tie rods connecting said bracing bars, together, bracing angle bars arranged at the upper corners of the oven and attached to the marginal angle bars and vertical corner bracing bars aforesaid, and tie rods extending through said bracing angle bars, substantially as set forth.

Signed at Chicago, Illinois, this 10th day of December, 1919.

ARTHUR MAEHLER. 

